自旋链中量子信息的完美传输与量子链中态的完美操控

Perfect information transfer in spin chains and perfect state control in quantum chains

在分析了相邻耦合自旋链后,提出了一种求解使量子信息在链中完美传输的耦合强度的方法,并用Groebner基分析的方法得到了耦合强度的所有解析解。该方法同样适用于求解脉冲激光驱动的多能级量子链系统量子态完美操控的控制参数问题。该结果可以用来分析自旋链量子信息的完美传输和多能级量子链态完美操控的解结构和寻找有优化性质的参数特解。

Based on analysis of neighbor-coupled spin chains, a method to get the parameters of the spin chains for perfect information transfer is given, and all analytical solutions are obtained by using Groebner basis analysis. The method is suitable to get the parameters of pulse-driven perfect state control in multilevel chains. The results can be used to analyze structures of the solutions or find particular parameters with optimal properties